wireguard-openbsd/sys/arch/powerpc, branch jd/queueboosts

Fix and harmonize some of the code dealing with address offsets encoded in

2020-06-06T22:53:04Z

instructions. ok drahn@, gkoehler@

Implement cpu_rnd_messybits() as a read of the cycle counter register.

2020-06-05T14:25:05Z

ok dlg@, powerpc/sparc64 ok kettenis@, sparc64/alpha tested by deraadt@

introduce "cpu_rnd_messybits" for use instead of nanotime in dev/rnd.c.

2020-05-31T06:23:56Z

rnd.c uses nanotime to get access to some bits that change quickly between events that it can mix into the entropy pool. it doesn't use nanotime to get a monotonically increasing set or ordered and accurate timestamps, it just wants something with bits that change. there's been discussions for years about letting rnd use a clock that's super fast to read, but not necessarily accurate, but it wasn't until recently that i figured out it wasn't interested in time at all, so things like keeping a fast clock coherent between cpu cores or correct according to ntp is unecessary. this means we can just let rnd read the cycle counters on cpus and things will be fine. cpus with cycle counters that vary in their speed and arent kept consistent between cores may even be desirable in this context. so this is the first step in converting rnd.c to reading cycle counter. it copies the nanotime backend to each arch, and they can replace it with something MD as a second step later on. djm@ suggested rnd_messybytes, but we landed on cpu_rnd_messybits. thanks to visa for his eyes. ok deraadt@ visa@ deraadt@ says he will help handle any MD fallout that occurs.

Retire .

2020-05-27T15:16:04Z

Nothing uses the header anymore. OK deraadt@ mpi@

Decode the %{ds}(%{A}) operand of ld, std instructions.

2020-05-22T00:33:45Z

I don't expect to see these 64-bit instructions in 32-bit kernels, but I'm going to copy this code to powerpc64. ok drahn@

Use '/t' on all architectures to get a trace via TID.

2020-05-14T06:58:54Z

ok sthen@, patrick@

Sync existing stacktrace_save() implementations

2020-04-18T04:45:20Z

Upgrade stacktrace_save() to stacktrace_save_at() on architectures where the latter is missing. Define stacktrace_save() as an inline function in header to reduce duplication of code. OK mpi@

Switch powerpc to MI mplock implementation.

2020-04-15T08:09:00Z

Reduce differences with others architectures and make it possible to use WITNESS on it. Rename & keep the current recursive lock implementation as it is used by the pmap. Tested by Peter J. Philipp, otto@ and cwen@. ok kettenis@

Implement stacktrace_save_at() required for upcoming WITNESS.

2020-04-10T07:23:21Z

ok gkoehler@

Fix inline assembly in ppc_mftb(); using %L0 instead of %0+1 makes this work

2020-03-17T10:14:45Z

for both gcc and clang. From NetBSD. Thanks to some serious detective work by ghoehler@. ok deraadt@, gkeohler@